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Bluetooth: btmtksdio: fix resume failure

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[ Upstream commit 561ae1d46a8ddcbc13162d5771f5ed6c8249e730 ]

btmtksdio have to rely on MMC_PM_KEEP_POWER in pm_flags to avoid that
SDIO power is being shut off during the device is in suspend. That fixes
the SDIO command fails to access the bus after the device is resumed.

Fixes: 7f3c563c575e7 ("Bluetooth: btmtksdio: Add runtime PM support to SDIO based Bluetooth")
Co-developed-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Mark-yw Chen <mark-yw.chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sean Wang 2021-12-02 02:02:47 +08:00 committed by Greg Kroah-Hartman
parent 0cad9c0c81
commit 35a89caf51
1 changed files with 2 additions and 0 deletions
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2
drivers/bluetooth/btmtksdio.c
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@ -1042,6 +1042,8 @@ static int btmtksdio_runtime_suspend(struct device *dev)
if (!bdev)
return 0;
sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
sdio_claim_host(bdev->func);
sdio_writel(bdev->func, C_FW_OWN_REQ_SET, MTK_REG_CHLPCR, &err);